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JVM 里的逻辑漏洞,居然让你的哈希表慢了 20%!
本文通过分析一段使用 ConcurrentHashMap 的代码发现,该段代码在 JDK 24 中比 JDK 23 快了 20% 以上,这一性能提升源于 JVM 对标量替换优化的改进。文章详细介绍了逃逸分析和标量替换的工作原理,以及它们如何影响对象的内存分配。此外,文章还讨论了 Java 内存管理 ...
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